docs: def _sorted_key_map(item, transform=to_bytes):
      """Creates a list of the item's key/value pairs as tuples, sorted by the keys transformed by transform.
  
      :param dict item: Source dictionary
      :param function transform: Transform function
      :returns: List of tuples containing transformed key, original value, and original key for each entry
      :rtype: list(tuple)
      """
      sorted_items = []
      for key, value in item.items():
          _key = transform(key)
          sorted_items.append((_key, value, key))
      sorted_items = sorted(sorted_items, key=lambda x: x[0])
      return sorted_items